查询词典 zinc

Dezincification is normally associated with brass valves where the zinc content exceeds 15%.

脱锌现象通常发生在锌含量超过15%的黄铜阀门上。

" High Copper, Low Zinc Brass Castings for Dezincification Resistance"

锌含量低的高纯度的铜铸件，有效防止锌泄漏

Now there is the development and utilization of gold, lead, zinc, iron, marble, granite, diabase, dolomite, limestone and so on.

现已开发利用的有金、铅、锌、铁、大理石、花岗岩、辉绿岩、白云石、石灰石等。

The company has vertical semi-continuous casting production lines, capable of producing all kinds of diameter of the circle and a square with deep processing of high-quality magnesium alloy billets deformation; extrusion production line can produce all types of magnesium alloy extrusion sacrificial anode, the sacrificial anode aluminum, zinc alloy sacrifice Anode and a variety of magnesium alloy extrusion products.

公司拥有立式半连续铸造生产线，能够生产各种直径的圆形和方形高品质深加工用变形镁合金坯料；挤压生产线可生产各类挤压镁合金牺牲阳极、铝合金牺牲阳极、锌合金牺牲阳极和各种镁合金挤压产品。

Finally, insufficient zinc appears to be linked to a higher risk of dwarfism, diarrhoea and pneumonia.

最后，锌缺乏则好象有较高的风险引起侏儒、腹泻和肺炎。

This specific preparation methods including: parathion of the initial reaction in acid and zinc metal in the common under redox reaction, a product of the reduction of parathion - parathion, with the sodium nitrite in the cold under diazotization reaction, and bovine serum protein tyrosine on the o-hydroxy combination of the adult immune original and immune rabbit polyclonal antibody preparation.

本发明制备方法具体包括：以对硫磷为反应初始物，在酸和金属锌的共同参与下进行氧化还原反应，得对硫磷还原产物对氨基对硫磷，再与亚硝酸钠在低温下进行重氮化反应后，与牛血清蛋白酪氨酸上羟基的邻位结合，制备成人工免疫原，并免疫新西兰大白兔制备多克隆抗体。

As a preliminary work we prepared bisorganozinc halides directly from diiodide and zinc powder, and investigated their reaction with acyl chloride to give diketone, the reaction mechanism also proposed on the basis of experiments and the literatures.

第三章：带官能团的双有机卤化锌试剂和酰氯的反应研究本章首次探讨了带官能团的双有机卤化锌试剂的制备及其与芳香族酰氯的反应研究。

Keywords phenanthroline 5;6 dione ;complex;nickel;copper;zinc

邻菲罗啉二酮；配合物；镍；铜；锌

A liquid amine ashless antioxidant HAO without phosphorus and zinc was prepared by alkylation of diphenylamine and 12 carbon iso olefin mixture, which can be applied at high temperature.

以二苯胺和含C12 的混合异构烯烃为原料，通过烷基化工艺，研制出了适于高温条件下应用的不含磷、锌元素的液态胺型无灰抗氧剂双十二烷基二苯胺。

Tang Wen-Xia In order to find out the relationship between the structure and function of copper/zinc superoxide dismutase, and elucidate mechanism of the catalytic dismutation of 〓, we have designed and synthesized two new model compounds of Cu, Zn-SOD, and studied relationship of their structure, properties and biological activity.

为了阐明Cu，Zn-SOD酶活性中心结构和功能的关系，探讨其催化〓歧化作用机理，本文设计并合成了两种不同结构的Cu，Zn-SOD模型化合物及一系列有关化合物，对它们进行了深入研究。1。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。